---
title: Error troubleshooting
sidebarTitle: Overview
---

import AlphaCallout from '/snippets/alpha-lg-callout.mdx';

<AlphaCallout />

This page contains guides around resolving common errors you may find while building with LangGraph.
Errors referenced below will have an `lc_error_code` property corresponding to one of the below codes when they are thrown in code.

* [GRAPH_RECURSION_LIMIT](/oss/langgraph/GRAPH_RECURSION_LIMIT)
* [INVALID_CONCURRENT_GRAPH_UPDATE](/oss/langgraph/INVALID_CONCURRENT_GRAPH_UPDATE)
* [INVALID_GRAPH_NODE_RETURN_VALUE](/oss/langgraph/INVALID_GRAPH_NODE_RETURN_VALUE)
* [MULTIPLE_SUBGRAPHS](/oss/langgraph/MULTIPLE_SUBGRAPHS)
* [INVALID_CHAT_HISTORY](/oss/langgraph/INVALID_CHAT_HISTORY)
